to get tougher sanctions you need china on board, not just to get through the security council but china in north korea's biggest trading partner. if you are going to monitor what goes in and out -- >> it provides a lot of food and oil and -- >> everything. yeah. >> president obama came in office famously promising to engage with regime like north korea. when that didn't work, threats of suffer sanctions. what do they do now and will it work? >> we probably all remember the famous statement from a debate in the summer of 2007, the white house is very alarmed as they should be. this is a big surprise. a big threat. working behind the scenes. talked to a senior official not long ago who said they working to put pressure on russians to try and put pressure on the north koreans as well. a big challenge for the white house. one more thing on the president's plate. in the middle of this domestic maelstrom. >> chris: foreign policy problems as well with syria. >> yeah. >> chris: busy plate. charles, your reaction? >> nothing will happen at the u.n. even if it were to happen at the u.n. it will